PIONEERPOS G24-LC manual Circuit 108 Behavior, 89 &D Parameters, At&D?, OK AT&D1

Hardware Information

&D, Circuit 108 Behavior

This command determines how the G24-L responds when the DTR (Data Terminal Ready) status is changed from ON to OFF during the online data state. The DTR is an input line that indicates that the terminal is ready.

The DTR line must be active (low) in order for the G24-L to recognize the terminal. This signal is raised by the terminal when a process activates the serial port. If the DTR is not used by the application, it should connect this line to ground (DTR active). The default value is active (low).

Command Type	Syntax	Response/Action
Set	AT&D<param>	OK
Read	AT&D?	&D:<param>
Test	AT&D=?	&D:(list of supported <param>s)

The following table shows the &D parameters.

		Table 3-89: &D Parameters
<Parameter>		Description
<param>	The G24-L’s reaction when the DTR status is changed from ON to OFF.
	In CSD calls:
	0,4	Ignores DTR changes
	1	Switches the CSD call to asynchronous command mode (the call remains
	connected)
	2,3	Disconnects the call and returns to the command mode
	In GPRS calls:
	0,4	Ignores DTR changes
	1-3	Deactivates the GPRS and returns to command mode
	The default value is 2.

Example

AT&D? &D: 2

OK AT&D1

OK

3-138 G24-L AT Commands Reference Manual April 15, 2008